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6aa8b732 AK |
1 | #ifndef __KVM_H |
2 | #define __KVM_H | |
3 | ||
4 | /* | |
5 | * This work is licensed under the terms of the GNU GPL, version 2. See | |
6 | * the COPYING file in the top-level directory. | |
7 | */ | |
8 | ||
9 | #include <linux/types.h> | |
10 | #include <linux/list.h> | |
11 | #include <linux/mutex.h> | |
12 | #include <linux/spinlock.h> | |
13 | #include <linux/mm.h> | |
e8edc6e0 | 14 | #include <asm/signal.h> |
6aa8b732 AK |
15 | |
16 | #include "vmx.h" | |
17 | #include <linux/kvm.h> | |
102d8325 | 18 | #include <linux/kvm_para.h> |
6aa8b732 AK |
19 | |
20 | #define CR0_PE_MASK (1ULL << 0) | |
21 | #define CR0_TS_MASK (1ULL << 3) | |
22 | #define CR0_NE_MASK (1ULL << 5) | |
23 | #define CR0_WP_MASK (1ULL << 16) | |
24 | #define CR0_NW_MASK (1ULL << 29) | |
25 | #define CR0_CD_MASK (1ULL << 30) | |
26 | #define CR0_PG_MASK (1ULL << 31) | |
27 | ||
28 | #define CR3_WPT_MASK (1ULL << 3) | |
29 | #define CR3_PCD_MASK (1ULL << 4) | |
30 | ||
31 | #define CR3_RESEVED_BITS 0x07ULL | |
32 | #define CR3_L_MODE_RESEVED_BITS (~((1ULL << 40) - 1) | 0x0fe7ULL) | |
33 | #define CR3_FLAGS_MASK ((1ULL << 5) - 1) | |
34 | ||
35 | #define CR4_VME_MASK (1ULL << 0) | |
36 | #define CR4_PSE_MASK (1ULL << 4) | |
37 | #define CR4_PAE_MASK (1ULL << 5) | |
38 | #define CR4_PGE_MASK (1ULL << 7) | |
39 | #define CR4_VMXE_MASK (1ULL << 13) | |
40 | ||
41 | #define KVM_GUEST_CR0_MASK \ | |
42 | (CR0_PG_MASK | CR0_PE_MASK | CR0_WP_MASK | CR0_NE_MASK \ | |
43 | | CR0_NW_MASK | CR0_CD_MASK) | |
44 | #define KVM_VM_CR0_ALWAYS_ON \ | |
45 | (CR0_PG_MASK | CR0_PE_MASK | CR0_WP_MASK | CR0_NE_MASK) | |
46 | #define KVM_GUEST_CR4_MASK \ | |
47 | (CR4_PSE_MASK | CR4_PAE_MASK | CR4_PGE_MASK | CR4_VMXE_MASK | CR4_VME_MASK) | |
48 | #define KVM_PMODE_VM_CR4_ALWAYS_ON (CR4_VMXE_MASK | CR4_PAE_MASK) | |
49 | #define KVM_RMODE_VM_CR4_ALWAYS_ON (CR4_VMXE_MASK | CR4_PAE_MASK | CR4_VME_MASK) | |
50 | ||
51 | #define INVALID_PAGE (~(hpa_t)0) | |
52 | #define UNMAPPED_GVA (~(gpa_t)0) | |
53 | ||
54 | #define KVM_MAX_VCPUS 1 | |
e8207547 | 55 | #define KVM_ALIAS_SLOTS 4 |
6aa8b732 AK |
56 | #define KVM_MEMORY_SLOTS 4 |
57 | #define KVM_NUM_MMU_PAGES 256 | |
ebeace86 AK |
58 | #define KVM_MIN_FREE_MMU_PAGES 5 |
59 | #define KVM_REFILL_PAGES 25 | |
06465c5a | 60 | #define KVM_MAX_CPUID_ENTRIES 40 |
6aa8b732 AK |
61 | |
62 | #define FX_IMAGE_SIZE 512 | |
63 | #define FX_IMAGE_ALIGN 16 | |
64 | #define FX_BUF_SIZE (2 * FX_IMAGE_SIZE + FX_IMAGE_ALIGN) | |
65 | ||
66 | #define DE_VECTOR 0 | |
7807fa6c | 67 | #define NM_VECTOR 7 |
6aa8b732 AK |
68 | #define DF_VECTOR 8 |
69 | #define TS_VECTOR 10 | |
70 | #define NP_VECTOR 11 | |
71 | #define SS_VECTOR 12 | |
72 | #define GP_VECTOR 13 | |
73 | #define PF_VECTOR 14 | |
74 | ||
75 | #define SELECTOR_TI_MASK (1 << 2) | |
76 | #define SELECTOR_RPL_MASK 0x03 | |
77 | ||
78 | #define IOPL_SHIFT 12 | |
79 | ||
039576c0 AK |
80 | #define KVM_PIO_PAGE_OFFSET 1 |
81 | ||
6aa8b732 AK |
82 | /* |
83 | * Address types: | |
84 | * | |
85 | * gva - guest virtual address | |
86 | * gpa - guest physical address | |
87 | * gfn - guest frame number | |
88 | * hva - host virtual address | |
89 | * hpa - host physical address | |
90 | * hfn - host frame number | |
91 | */ | |
92 | ||
93 | typedef unsigned long gva_t; | |
94 | typedef u64 gpa_t; | |
95 | typedef unsigned long gfn_t; | |
96 | ||
97 | typedef unsigned long hva_t; | |
98 | typedef u64 hpa_t; | |
99 | typedef unsigned long hfn_t; | |
100 | ||
cea0f0e7 AK |
101 | #define NR_PTE_CHAIN_ENTRIES 5 |
102 | ||
103 | struct kvm_pte_chain { | |
104 | u64 *parent_ptes[NR_PTE_CHAIN_ENTRIES]; | |
105 | struct hlist_node link; | |
106 | }; | |
107 | ||
108 | /* | |
109 | * kvm_mmu_page_role, below, is defined as: | |
110 | * | |
111 | * bits 0:3 - total guest paging levels (2-4, or zero for real mode) | |
112 | * bits 4:7 - page table level for this shadow (1-4) | |
113 | * bits 8:9 - page table quadrant for 2-level guests | |
114 | * bit 16 - "metaphysical" - gfn is not a real page (huge page/real mode) | |
d28c6cfb | 115 | * bits 17:18 - "access" - the user and writable bits of a huge page pde |
cea0f0e7 AK |
116 | */ |
117 | union kvm_mmu_page_role { | |
118 | unsigned word; | |
119 | struct { | |
120 | unsigned glevels : 4; | |
121 | unsigned level : 4; | |
122 | unsigned quadrant : 2; | |
123 | unsigned pad_for_nice_hex_output : 6; | |
124 | unsigned metaphysical : 1; | |
d28c6cfb | 125 | unsigned hugepage_access : 2; |
cea0f0e7 AK |
126 | }; |
127 | }; | |
128 | ||
6aa8b732 AK |
129 | struct kvm_mmu_page { |
130 | struct list_head link; | |
cea0f0e7 AK |
131 | struct hlist_node hash_link; |
132 | ||
133 | /* | |
134 | * The following two entries are used to key the shadow page in the | |
135 | * hash table. | |
136 | */ | |
137 | gfn_t gfn; | |
138 | union kvm_mmu_page_role role; | |
139 | ||
6aa8b732 AK |
140 | hpa_t page_hpa; |
141 | unsigned long slot_bitmap; /* One bit set per slot which has memory | |
142 | * in this shadow page. | |
143 | */ | |
cea0f0e7 | 144 | int multimapped; /* More than one parent_pte? */ |
3bb65a22 | 145 | int root_count; /* Currently serving as active root */ |
cea0f0e7 AK |
146 | union { |
147 | u64 *parent_pte; /* !multimapped */ | |
148 | struct hlist_head parent_ptes; /* multimapped, kvm_pte_chain */ | |
149 | }; | |
6aa8b732 AK |
150 | }; |
151 | ||
152 | struct vmcs { | |
153 | u32 revision_id; | |
154 | u32 abort; | |
155 | char data[0]; | |
156 | }; | |
157 | ||
158 | #define vmx_msr_entry kvm_msr_entry | |
159 | ||
160 | struct kvm_vcpu; | |
161 | ||
162 | /* | |
163 | * x86 supports 3 paging modes (4-level 64-bit, 3-level 64-bit, and 2-level | |
164 | * 32-bit). The kvm_mmu structure abstracts the details of the current mmu | |
165 | * mode. | |
166 | */ | |
167 | struct kvm_mmu { | |
168 | void (*new_cr3)(struct kvm_vcpu *vcpu); | |
169 | int (*page_fault)(struct kvm_vcpu *vcpu, gva_t gva, u32 err); | |
6aa8b732 AK |
170 | void (*free)(struct kvm_vcpu *vcpu); |
171 | gpa_t (*gva_to_gpa)(struct kvm_vcpu *vcpu, gva_t gva); | |
172 | hpa_t root_hpa; | |
173 | int root_level; | |
174 | int shadow_root_level; | |
17ac10ad AK |
175 | |
176 | u64 *pae_root; | |
6aa8b732 AK |
177 | }; |
178 | ||
714b93da AK |
179 | #define KVM_NR_MEM_OBJS 20 |
180 | ||
181 | struct kvm_mmu_memory_cache { | |
182 | int nobjs; | |
183 | void *objects[KVM_NR_MEM_OBJS]; | |
184 | }; | |
185 | ||
186 | /* | |
187 | * We don't want allocation failures within the mmu code, so we preallocate | |
188 | * enough memory for a single page fault in a cache. | |
189 | */ | |
6aa8b732 AK |
190 | struct kvm_guest_debug { |
191 | int enabled; | |
192 | unsigned long bp[4]; | |
193 | int singlestep; | |
194 | }; | |
195 | ||
196 | enum { | |
197 | VCPU_REGS_RAX = 0, | |
198 | VCPU_REGS_RCX = 1, | |
199 | VCPU_REGS_RDX = 2, | |
200 | VCPU_REGS_RBX = 3, | |
201 | VCPU_REGS_RSP = 4, | |
202 | VCPU_REGS_RBP = 5, | |
203 | VCPU_REGS_RSI = 6, | |
204 | VCPU_REGS_RDI = 7, | |
05b3e0c2 | 205 | #ifdef CONFIG_X86_64 |
6aa8b732 AK |
206 | VCPU_REGS_R8 = 8, |
207 | VCPU_REGS_R9 = 9, | |
208 | VCPU_REGS_R10 = 10, | |
209 | VCPU_REGS_R11 = 11, | |
210 | VCPU_REGS_R12 = 12, | |
211 | VCPU_REGS_R13 = 13, | |
212 | VCPU_REGS_R14 = 14, | |
213 | VCPU_REGS_R15 = 15, | |
214 | #endif | |
215 | NR_VCPU_REGS | |
216 | }; | |
217 | ||
218 | enum { | |
219 | VCPU_SREG_CS, | |
220 | VCPU_SREG_DS, | |
221 | VCPU_SREG_ES, | |
222 | VCPU_SREG_FS, | |
223 | VCPU_SREG_GS, | |
224 | VCPU_SREG_SS, | |
225 | VCPU_SREG_TR, | |
226 | VCPU_SREG_LDTR, | |
227 | }; | |
228 | ||
039576c0 AK |
229 | struct kvm_pio_request { |
230 | unsigned long count; | |
231 | int cur_count; | |
232 | struct page *guest_pages[2]; | |
233 | unsigned guest_page_offset; | |
234 | int in; | |
235 | int size; | |
236 | int string; | |
237 | int down; | |
238 | int rep; | |
239 | }; | |
240 | ||
1165f5fe AK |
241 | struct kvm_stat { |
242 | u32 pf_fixed; | |
243 | u32 pf_guest; | |
244 | u32 tlb_flush; | |
245 | u32 invlpg; | |
246 | ||
247 | u32 exits; | |
248 | u32 io_exits; | |
249 | u32 mmio_exits; | |
250 | u32 signal_exits; | |
251 | u32 irq_window_exits; | |
252 | u32 halt_exits; | |
253 | u32 request_irq_exits; | |
254 | u32 irq_exits; | |
255 | }; | |
256 | ||
6aa8b732 AK |
257 | struct kvm_vcpu { |
258 | struct kvm *kvm; | |
259 | union { | |
260 | struct vmcs *vmcs; | |
261 | struct vcpu_svm *svm; | |
262 | }; | |
263 | struct mutex mutex; | |
264 | int cpu; | |
265 | int launched; | |
0cc5064d | 266 | u64 host_tsc; |
9a2bb7f4 | 267 | struct kvm_run *run; |
c1150d8c | 268 | int interrupt_window_open; |
6aa8b732 AK |
269 | unsigned long irq_summary; /* bit vector: 1 per word in irq_pending */ |
270 | #define NR_IRQ_WORDS KVM_IRQ_BITMAP_SIZE(unsigned long) | |
271 | unsigned long irq_pending[NR_IRQ_WORDS]; | |
272 | unsigned long regs[NR_VCPU_REGS]; /* for rsp: vcpu_load_rsp_rip() */ | |
273 | unsigned long rip; /* needs vcpu_load_rsp_rip() */ | |
274 | ||
275 | unsigned long cr0; | |
276 | unsigned long cr2; | |
277 | unsigned long cr3; | |
102d8325 IM |
278 | gpa_t para_state_gpa; |
279 | struct page *para_state_page; | |
280 | gpa_t hypercall_gpa; | |
6aa8b732 AK |
281 | unsigned long cr4; |
282 | unsigned long cr8; | |
1342d353 | 283 | u64 pdptrs[4]; /* pae */ |
6aa8b732 AK |
284 | u64 shadow_efer; |
285 | u64 apic_base; | |
6f00e68f | 286 | u64 ia32_misc_enable_msr; |
6aa8b732 AK |
287 | int nmsrs; |
288 | struct vmx_msr_entry *guest_msrs; | |
289 | struct vmx_msr_entry *host_msrs; | |
290 | ||
291 | struct list_head free_pages; | |
292 | struct kvm_mmu_page page_header_buf[KVM_NUM_MMU_PAGES]; | |
293 | struct kvm_mmu mmu; | |
294 | ||
714b93da AK |
295 | struct kvm_mmu_memory_cache mmu_pte_chain_cache; |
296 | struct kvm_mmu_memory_cache mmu_rmap_desc_cache; | |
297 | ||
86a5ba02 AK |
298 | gfn_t last_pt_write_gfn; |
299 | int last_pt_write_count; | |
300 | ||
6aa8b732 AK |
301 | struct kvm_guest_debug guest_debug; |
302 | ||
303 | char fx_buf[FX_BUF_SIZE]; | |
304 | char *host_fx_image; | |
305 | char *guest_fx_image; | |
7807fa6c | 306 | int fpu_active; |
6aa8b732 AK |
307 | |
308 | int mmio_needed; | |
309 | int mmio_read_completed; | |
310 | int mmio_is_write; | |
311 | int mmio_size; | |
312 | unsigned char mmio_data[8]; | |
313 | gpa_t mmio_phys_addr; | |
e7df56e4 | 314 | gva_t mmio_fault_cr2; |
039576c0 AK |
315 | struct kvm_pio_request pio; |
316 | void *pio_data; | |
6aa8b732 | 317 | |
1961d276 AK |
318 | int sigset_active; |
319 | sigset_t sigset; | |
320 | ||
1165f5fe AK |
321 | struct kvm_stat stat; |
322 | ||
6aa8b732 AK |
323 | struct { |
324 | int active; | |
325 | u8 save_iopl; | |
326 | struct kvm_save_segment { | |
327 | u16 selector; | |
328 | unsigned long base; | |
329 | u32 limit; | |
330 | u32 ar; | |
331 | } tr, es, ds, fs, gs; | |
332 | } rmode; | |
06465c5a AK |
333 | |
334 | int cpuid_nent; | |
335 | struct kvm_cpuid_entry cpuid_entries[KVM_MAX_CPUID_ENTRIES]; | |
6aa8b732 AK |
336 | }; |
337 | ||
e8207547 AK |
338 | struct kvm_mem_alias { |
339 | gfn_t base_gfn; | |
340 | unsigned long npages; | |
341 | gfn_t target_gfn; | |
342 | }; | |
343 | ||
6aa8b732 AK |
344 | struct kvm_memory_slot { |
345 | gfn_t base_gfn; | |
346 | unsigned long npages; | |
347 | unsigned long flags; | |
348 | struct page **phys_mem; | |
349 | unsigned long *dirty_bitmap; | |
350 | }; | |
351 | ||
352 | struct kvm { | |
353 | spinlock_t lock; /* protects everything except vcpus */ | |
e8207547 AK |
354 | int naliases; |
355 | struct kvm_mem_alias aliases[KVM_ALIAS_SLOTS]; | |
6aa8b732 AK |
356 | int nmemslots; |
357 | struct kvm_memory_slot memslots[KVM_MEMORY_SLOTS]; | |
cea0f0e7 AK |
358 | /* |
359 | * Hash table of struct kvm_mmu_page. | |
360 | */ | |
6aa8b732 | 361 | struct list_head active_mmu_pages; |
ebeace86 | 362 | int n_free_mmu_pages; |
cea0f0e7 | 363 | struct hlist_head mmu_page_hash[KVM_NUM_MMU_PAGES]; |
6aa8b732 AK |
364 | struct kvm_vcpu vcpus[KVM_MAX_VCPUS]; |
365 | int memory_config_version; | |
366 | int busy; | |
cd4a4e53 | 367 | unsigned long rmap_overflow; |
133de902 | 368 | struct list_head vm_list; |
bccf2150 | 369 | struct file *filp; |
6aa8b732 AK |
370 | }; |
371 | ||
6aa8b732 AK |
372 | struct descriptor_table { |
373 | u16 limit; | |
374 | unsigned long base; | |
375 | } __attribute__((packed)); | |
376 | ||
377 | struct kvm_arch_ops { | |
378 | int (*cpu_has_kvm_support)(void); /* __init */ | |
379 | int (*disabled_by_bios)(void); /* __init */ | |
380 | void (*hardware_enable)(void *dummy); /* __init */ | |
381 | void (*hardware_disable)(void *dummy); | |
382 | int (*hardware_setup)(void); /* __init */ | |
383 | void (*hardware_unsetup)(void); /* __exit */ | |
384 | ||
385 | int (*vcpu_create)(struct kvm_vcpu *vcpu); | |
386 | void (*vcpu_free)(struct kvm_vcpu *vcpu); | |
387 | ||
bccf2150 | 388 | void (*vcpu_load)(struct kvm_vcpu *vcpu); |
6aa8b732 | 389 | void (*vcpu_put)(struct kvm_vcpu *vcpu); |
774c47f1 | 390 | void (*vcpu_decache)(struct kvm_vcpu *vcpu); |
6aa8b732 AK |
391 | |
392 | int (*set_guest_debug)(struct kvm_vcpu *vcpu, | |
393 | struct kvm_debug_guest *dbg); | |
394 | int (*get_msr)(struct kvm_vcpu *vcpu, u32 msr_index, u64 *pdata); | |
395 | int (*set_msr)(struct kvm_vcpu *vcpu, u32 msr_index, u64 data); | |
396 | u64 (*get_segment_base)(struct kvm_vcpu *vcpu, int seg); | |
397 | void (*get_segment)(struct kvm_vcpu *vcpu, | |
398 | struct kvm_segment *var, int seg); | |
399 | void (*set_segment)(struct kvm_vcpu *vcpu, | |
400 | struct kvm_segment *var, int seg); | |
6aa8b732 | 401 | void (*get_cs_db_l_bits)(struct kvm_vcpu *vcpu, int *db, int *l); |
25c4c276 | 402 | void (*decache_cr4_guest_bits)(struct kvm_vcpu *vcpu); |
6aa8b732 | 403 | void (*set_cr0)(struct kvm_vcpu *vcpu, unsigned long cr0); |
6aa8b732 AK |
404 | void (*set_cr3)(struct kvm_vcpu *vcpu, unsigned long cr3); |
405 | void (*set_cr4)(struct kvm_vcpu *vcpu, unsigned long cr4); | |
406 | void (*set_efer)(struct kvm_vcpu *vcpu, u64 efer); | |
407 | void (*get_idt)(struct kvm_vcpu *vcpu, struct descriptor_table *dt); | |
408 | void (*set_idt)(struct kvm_vcpu *vcpu, struct descriptor_table *dt); | |
409 | void (*get_gdt)(struct kvm_vcpu *vcpu, struct descriptor_table *dt); | |
410 | void (*set_gdt)(struct kvm_vcpu *vcpu, struct descriptor_table *dt); | |
411 | unsigned long (*get_dr)(struct kvm_vcpu *vcpu, int dr); | |
412 | void (*set_dr)(struct kvm_vcpu *vcpu, int dr, unsigned long value, | |
413 | int *exception); | |
414 | void (*cache_regs)(struct kvm_vcpu *vcpu); | |
415 | void (*decache_regs)(struct kvm_vcpu *vcpu); | |
416 | unsigned long (*get_rflags)(struct kvm_vcpu *vcpu); | |
417 | void (*set_rflags)(struct kvm_vcpu *vcpu, unsigned long rflags); | |
418 | ||
419 | void (*invlpg)(struct kvm_vcpu *vcpu, gva_t addr); | |
420 | void (*tlb_flush)(struct kvm_vcpu *vcpu); | |
421 | void (*inject_page_fault)(struct kvm_vcpu *vcpu, | |
422 | unsigned long addr, u32 err_code); | |
423 | ||
424 | void (*inject_gp)(struct kvm_vcpu *vcpu, unsigned err_code); | |
425 | ||
426 | int (*run)(struct kvm_vcpu *vcpu, struct kvm_run *run); | |
427 | int (*vcpu_setup)(struct kvm_vcpu *vcpu); | |
428 | void (*skip_emulated_instruction)(struct kvm_vcpu *vcpu); | |
102d8325 IM |
429 | void (*patch_hypercall)(struct kvm_vcpu *vcpu, |
430 | unsigned char *hypercall_addr); | |
6aa8b732 AK |
431 | }; |
432 | ||
6aa8b732 AK |
433 | extern struct kvm_arch_ops *kvm_arch_ops; |
434 | ||
435 | #define kvm_printf(kvm, fmt ...) printk(KERN_DEBUG fmt) | |
436 | #define vcpu_printf(vcpu, fmt...) kvm_printf(vcpu->kvm, fmt) | |
437 | ||
438 | int kvm_init_arch(struct kvm_arch_ops *ops, struct module *module); | |
439 | void kvm_exit_arch(void); | |
440 | ||
b5a33a75 AK |
441 | int kvm_mmu_module_init(void); |
442 | void kvm_mmu_module_exit(void); | |
443 | ||
6aa8b732 | 444 | void kvm_mmu_destroy(struct kvm_vcpu *vcpu); |
8018c27b IM |
445 | int kvm_mmu_create(struct kvm_vcpu *vcpu); |
446 | int kvm_mmu_setup(struct kvm_vcpu *vcpu); | |
6aa8b732 AK |
447 | |
448 | int kvm_mmu_reset_context(struct kvm_vcpu *vcpu); | |
714b93da | 449 | void kvm_mmu_slot_remove_write_access(struct kvm_vcpu *vcpu, int slot); |
e0fa826f | 450 | void kvm_mmu_zap_all(struct kvm_vcpu *vcpu); |
6aa8b732 AK |
451 | |
452 | hpa_t gpa_to_hpa(struct kvm_vcpu *vcpu, gpa_t gpa); | |
453 | #define HPA_MSB ((sizeof(hpa_t) * 8) - 1) | |
454 | #define HPA_ERR_MASK ((hpa_t)1 << HPA_MSB) | |
455 | static inline int is_error_hpa(hpa_t hpa) { return hpa >> HPA_MSB; } | |
456 | hpa_t gva_to_hpa(struct kvm_vcpu *vcpu, gva_t gva); | |
039576c0 | 457 | struct page *gva_to_page(struct kvm_vcpu *vcpu, gva_t gva); |
6aa8b732 AK |
458 | |
459 | void kvm_emulator_want_group7_invlpg(void); | |
460 | ||
461 | extern hpa_t bad_page_address; | |
462 | ||
954bbbc2 | 463 | struct page *gfn_to_page(struct kvm *kvm, gfn_t gfn); |
6aa8b732 AK |
464 | struct kvm_memory_slot *gfn_to_memslot(struct kvm *kvm, gfn_t gfn); |
465 | void mark_page_dirty(struct kvm *kvm, gfn_t gfn); | |
466 | ||
467 | enum emulation_result { | |
468 | EMULATE_DONE, /* no further processing */ | |
469 | EMULATE_DO_MMIO, /* kvm_run filled with mmio request */ | |
470 | EMULATE_FAIL, /* can't emulate this instruction */ | |
471 | }; | |
472 | ||
473 | int emulate_instruction(struct kvm_vcpu *vcpu, struct kvm_run *run, | |
474 | unsigned long cr2, u16 error_code); | |
475 | void realmode_lgdt(struct kvm_vcpu *vcpu, u16 size, unsigned long address); | |
476 | void realmode_lidt(struct kvm_vcpu *vcpu, u16 size, unsigned long address); | |
477 | void realmode_lmsw(struct kvm_vcpu *vcpu, unsigned long msw, | |
478 | unsigned long *rflags); | |
479 | ||
480 | unsigned long realmode_get_cr(struct kvm_vcpu *vcpu, int cr); | |
481 | void realmode_set_cr(struct kvm_vcpu *vcpu, int cr, unsigned long value, | |
482 | unsigned long *rflags); | |
483 | ||
484 | struct x86_emulate_ctxt; | |
485 | ||
039576c0 AK |
486 | int kvm_setup_pio(struct kvm_vcpu *vcpu, struct kvm_run *run, int in, |
487 | int size, unsigned long count, int string, int down, | |
488 | gva_t address, int rep, unsigned port); | |
06465c5a | 489 | void kvm_emulate_cpuid(struct kvm_vcpu *vcpu); |
6aa8b732 AK |
490 | int emulate_invlpg(struct kvm_vcpu *vcpu, gva_t address); |
491 | int emulate_clts(struct kvm_vcpu *vcpu); | |
492 | int emulator_get_dr(struct x86_emulate_ctxt* ctxt, int dr, | |
493 | unsigned long *dest); | |
494 | int emulator_set_dr(struct x86_emulate_ctxt *ctxt, int dr, | |
495 | unsigned long value); | |
496 | ||
497 | void set_cr0(struct kvm_vcpu *vcpu, unsigned long cr0); | |
498 | void set_cr3(struct kvm_vcpu *vcpu, unsigned long cr0); | |
499 | void set_cr4(struct kvm_vcpu *vcpu, unsigned long cr0); | |
500 | void set_cr8(struct kvm_vcpu *vcpu, unsigned long cr0); | |
501 | void lmsw(struct kvm_vcpu *vcpu, unsigned long msw); | |
502 | ||
3bab1f5d AK |
503 | int kvm_get_msr_common(struct kvm_vcpu *vcpu, u32 msr, u64 *pdata); |
504 | int kvm_set_msr_common(struct kvm_vcpu *vcpu, u32 msr, u64 data); | |
6aa8b732 AK |
505 | |
506 | void fx_init(struct kvm_vcpu *vcpu); | |
507 | ||
508 | void load_msrs(struct vmx_msr_entry *e, int n); | |
509 | void save_msrs(struct vmx_msr_entry *e, int n); | |
510 | void kvm_resched(struct kvm_vcpu *vcpu); | |
511 | ||
512 | int kvm_read_guest(struct kvm_vcpu *vcpu, | |
513 | gva_t addr, | |
514 | unsigned long size, | |
515 | void *dest); | |
516 | ||
517 | int kvm_write_guest(struct kvm_vcpu *vcpu, | |
518 | gva_t addr, | |
519 | unsigned long size, | |
520 | void *data); | |
521 | ||
522 | unsigned long segment_base(u16 selector); | |
523 | ||
da4a00f0 AK |
524 | void kvm_mmu_pre_write(struct kvm_vcpu *vcpu, gpa_t gpa, int bytes); |
525 | void kvm_mmu_post_write(struct kvm_vcpu *vcpu, gpa_t gpa, int bytes); | |
a436036b | 526 | int kvm_mmu_unprotect_page_virt(struct kvm_vcpu *vcpu, gva_t gva); |
ebeace86 AK |
527 | void kvm_mmu_free_some_pages(struct kvm_vcpu *vcpu); |
528 | ||
270fd9b9 AK |
529 | int kvm_hypercall(struct kvm_vcpu *vcpu, struct kvm_run *run); |
530 | ||
ebeace86 AK |
531 | static inline int kvm_mmu_page_fault(struct kvm_vcpu *vcpu, gva_t gva, |
532 | u32 error_code) | |
533 | { | |
534 | if (unlikely(vcpu->kvm->n_free_mmu_pages < KVM_MIN_FREE_MMU_PAGES)) | |
535 | kvm_mmu_free_some_pages(vcpu); | |
536 | return vcpu->mmu.page_fault(vcpu, gva, error_code); | |
537 | } | |
da4a00f0 | 538 | |
a9058ecd AK |
539 | static inline int is_long_mode(struct kvm_vcpu *vcpu) |
540 | { | |
541 | #ifdef CONFIG_X86_64 | |
542 | return vcpu->shadow_efer & EFER_LME; | |
543 | #else | |
544 | return 0; | |
545 | #endif | |
546 | } | |
547 | ||
6aa8b732 AK |
548 | static inline int is_pae(struct kvm_vcpu *vcpu) |
549 | { | |
550 | return vcpu->cr4 & CR4_PAE_MASK; | |
551 | } | |
552 | ||
553 | static inline int is_pse(struct kvm_vcpu *vcpu) | |
554 | { | |
555 | return vcpu->cr4 & CR4_PSE_MASK; | |
556 | } | |
557 | ||
558 | static inline int is_paging(struct kvm_vcpu *vcpu) | |
559 | { | |
560 | return vcpu->cr0 & CR0_PG_MASK; | |
561 | } | |
562 | ||
563 | static inline int memslot_id(struct kvm *kvm, struct kvm_memory_slot *slot) | |
564 | { | |
565 | return slot - kvm->memslots; | |
566 | } | |
567 | ||
568 | static inline struct kvm_mmu_page *page_header(hpa_t shadow_page) | |
569 | { | |
570 | struct page *page = pfn_to_page(shadow_page >> PAGE_SHIFT); | |
571 | ||
5972e953 | 572 | return (struct kvm_mmu_page *)page_private(page); |
6aa8b732 AK |
573 | } |
574 | ||
575 | static inline u16 read_fs(void) | |
576 | { | |
577 | u16 seg; | |
578 | asm ("mov %%fs, %0" : "=g"(seg)); | |
579 | return seg; | |
580 | } | |
581 | ||
582 | static inline u16 read_gs(void) | |
583 | { | |
584 | u16 seg; | |
585 | asm ("mov %%gs, %0" : "=g"(seg)); | |
586 | return seg; | |
587 | } | |
588 | ||
589 | static inline u16 read_ldt(void) | |
590 | { | |
591 | u16 ldt; | |
592 | asm ("sldt %0" : "=g"(ldt)); | |
593 | return ldt; | |
594 | } | |
595 | ||
596 | static inline void load_fs(u16 sel) | |
597 | { | |
598 | asm ("mov %0, %%fs" : : "rm"(sel)); | |
599 | } | |
600 | ||
601 | static inline void load_gs(u16 sel) | |
602 | { | |
603 | asm ("mov %0, %%gs" : : "rm"(sel)); | |
604 | } | |
605 | ||
606 | #ifndef load_ldt | |
607 | static inline void load_ldt(u16 sel) | |
608 | { | |
a0610ddf | 609 | asm ("lldt %0" : : "rm"(sel)); |
6aa8b732 AK |
610 | } |
611 | #endif | |
612 | ||
613 | static inline void get_idt(struct descriptor_table *table) | |
614 | { | |
615 | asm ("sidt %0" : "=m"(*table)); | |
616 | } | |
617 | ||
618 | static inline void get_gdt(struct descriptor_table *table) | |
619 | { | |
620 | asm ("sgdt %0" : "=m"(*table)); | |
621 | } | |
622 | ||
623 | static inline unsigned long read_tr_base(void) | |
624 | { | |
625 | u16 tr; | |
626 | asm ("str %0" : "=g"(tr)); | |
627 | return segment_base(tr); | |
628 | } | |
629 | ||
05b3e0c2 | 630 | #ifdef CONFIG_X86_64 |
6aa8b732 AK |
631 | static inline unsigned long read_msr(unsigned long msr) |
632 | { | |
633 | u64 value; | |
634 | ||
635 | rdmsrl(msr, value); | |
636 | return value; | |
637 | } | |
638 | #endif | |
639 | ||
640 | static inline void fx_save(void *image) | |
641 | { | |
642 | asm ("fxsave (%0)":: "r" (image)); | |
643 | } | |
644 | ||
645 | static inline void fx_restore(void *image) | |
646 | { | |
647 | asm ("fxrstor (%0)":: "r" (image)); | |
648 | } | |
649 | ||
650 | static inline void fpu_init(void) | |
651 | { | |
652 | asm ("finit"); | |
653 | } | |
654 | ||
655 | static inline u32 get_rdx_init_val(void) | |
656 | { | |
657 | return 0x600; /* P6 family */ | |
658 | } | |
659 | ||
660 | #define ASM_VMX_VMCLEAR_RAX ".byte 0x66, 0x0f, 0xc7, 0x30" | |
661 | #define ASM_VMX_VMLAUNCH ".byte 0x0f, 0x01, 0xc2" | |
662 | #define ASM_VMX_VMRESUME ".byte 0x0f, 0x01, 0xc3" | |
663 | #define ASM_VMX_VMPTRLD_RAX ".byte 0x0f, 0xc7, 0x30" | |
664 | #define ASM_VMX_VMREAD_RDX_RAX ".byte 0x0f, 0x78, 0xd0" | |
665 | #define ASM_VMX_VMWRITE_RAX_RDX ".byte 0x0f, 0x79, 0xd0" | |
666 | #define ASM_VMX_VMWRITE_RSP_RDX ".byte 0x0f, 0x79, 0xd4" | |
667 | #define ASM_VMX_VMXOFF ".byte 0x0f, 0x01, 0xc4" | |
668 | #define ASM_VMX_VMXON_RAX ".byte 0xf3, 0x0f, 0xc7, 0x30" | |
669 | ||
670 | #define MSR_IA32_TIME_STAMP_COUNTER 0x010 | |
671 | ||
672 | #define TSS_IOPB_BASE_OFFSET 0x66 | |
673 | #define TSS_BASE_SIZE 0x68 | |
674 | #define TSS_IOPB_SIZE (65536 / 8) | |
675 | #define TSS_REDIRECTION_SIZE (256 / 8) | |
676 | #define RMODE_TSS_SIZE (TSS_BASE_SIZE + TSS_REDIRECTION_SIZE + TSS_IOPB_SIZE + 1) | |
677 | ||
6aa8b732 | 678 | #endif |